Colour
#423F36
- #423F36
- Yellow
- Dark
- Nearest: Dark slate grey
#423F36 is a yellow with RGB values 66, 63, 54 and HSL 45°, 10%, 24%. It is a dark colour, so white text on it reaches 10.5:1 contrast (AAA for normal text). The nearest named colour is Dark slate grey.
Colour values
#423F36#423F36
HEX#423F36
RGBrgb(66, 63, 54)
RGB (0–1)0.2588, 0.2471, 0.2118
RGB percentages25.9%, 24.7%, 21.2%
HSLhsl(45, 10%, 23.5%)
HSV / HSBhsv(45, 18.2%, 25.9%)
CMYK0%, 4.5%, 18.2%, 74.1%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer4,341,558
CSS custom property--colour: #423F36;
Brightness & contrast
Relative luminance0.0498WCAG 2.x, 0 is black and 1 is white
Perceived brightness63 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 10.52:1
Contrast with white10.52:1WCAG normal text: AAA
Contrast with black2:1WCAG normal text: Fail
Greyscale equivalent#3F3F3F
Inverted#BDC0C9
Colour vision & accessibility
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text10.52:1WCAG large text: AAA
Contrast with black, large text2:1WCAG large text: Fail
Named colours
Hue familyyellow
CSS keyword usableNo exact keyword
Colour harmonies
Complementary#363942
Analogous#423936, #3F4236
Triadic#36423F, #3F3642
Split complementary#363F42, #393642
Tetradic#364239, #363942, #42363F
Tints, shades & saturation
Channel breakdown
R66
G63
B54
Red66 (25.9%)
Green63 (24.7%)
Blue54 (21.2%)
Hue45°
Saturation (HSL)10%
Lightness23.53%
Dominant channelRed
Hex per channelR 42 · G 3F · B 36
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